Error in sisotool function controlSystemDesigner

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Aria Arianpor 2020-10-24

评论： Walter Roberson 2020-10-30

This is the error i face when I call sisotool

Error using controlSystemDesigner (line 243) Output argument "angle" (and maybe others) not assigned during call to "angle".

Error in sisotool (line 88) h = controlSystemDesigner(varargin{:});

Error in exaple (line 11) sisotool(syst)

this is the code

s=tf('s');
syst= 1/(1+s)^2;
sisotool(syst)

or even simply

sisotool

I have removed Matlab 2017b completely and installed 2019b. Surprisingly, I still have trouble calling 'sisotool'. What should I do now?

Walter Roberson 2020-10-26

restoredefaultpath
rehash toolboxcache

and try again.

I suspect you have a third-party toolbox such as psat installed that is interfering with using the code.

Aria Arianpor 2020-10-27

Thanks for your help, but it's made no defference

Aria Arianpor 2020-10-29

I have removed Matlab 2017b completely and installed 2019b. Surprisingly, I still have trouble calling 'sisotool'. What should I do now?

Walter Roberson 2020-10-30

dbstop if caught error

and then do a bunch of debugging.

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